MS-DRG clusters
Medicare Severity Diagnosis-Related Groups (MS-DRGs) are defined by Centers for Medicare and Medicaid Services (CMS). In Clinical Analytics, MS-DRGs are organized into clusters. Each cluster represents a set of principal diagnoses and/or procedures and is divided into 2-3 DRGs representing the levels of complicating conditions (CC/MMC/none) for a particular encounter. Clusters are named for the MS-DRG descriptions contained, without the CC/MCC/none designations.
NOTES: Clinical Analytics currently uses Version 41.0 of CMS MS-DRGs. For more information, see MS-DRGs. For a full list of MS-DRGs, see ICD-10-CM/PCS MS-DRG v41.0 Definitions Manual.
Note that Cluster IDs (far right column) are unique to Clinical Analytics and not from CMS. This list of clusters is arranged numerically by MS-DRG. Single MS-DRGs (no cluster) do not have an associated Axiom Cluster ID because there are not multiple severity levels (CC/MCC/none) associated.
| Included MS-DRGs | Cluster description | Major Diagnostic Category (MDC) | DRG type |
Axiom Service Line |
Axiom Cluster ID |
|---|---|---|---|---|---|
| 1-2 | Heart transplant or implant of heart assist system | none | Surgical |
Cardiac Surgery |
118 |
| 3 | ECMO or Tracheostomy with Mechanical Ventilation >96 hours or PDX except face, mouth, and neck with major O.R. procedure | none | Surgical | Otorhinolaryngology-Surgical | |
| 4 | Tracheostomy with Mechanical Ventilation >96 hours or PDX except face, mouth and neck without major O.R. procedure | none | Surgical | Otorhinolaryngology-Surgical | |
| 5-6 | Liver transplant or intestinal transplant | none | Surgical | General Surgery | 147 |
| 7 | Lung Transplant | none | Surgical | General Surgery | |
| 8 | Simultaneous pancreas and kidney transplant | none | Surgical | General Surgery | |
| 10 | Pancreas transplant | none | Surgical | General Surgery | |
| 11-13 | Tracheostomy for face, mouth, and neck diagnoses | none | Surgical | Otorhinolaryngology-Surgical | 309 |
| 14 | Allogeneic Bone Marrow Transplant | none | Surgical | General Surgery | |
| 16-17 | Autologous bone marrow transplant | none | Surgical | General Surgery | |
| 20-22 | Intracranial vascular procedures with PDX hemorrhage | MDC 01 | Surgical | Vascular Surgery | 135 |
| 23-24 | Craniotomy with major device implant or acute complex CNS PDX or chemotherapy implant or epilepsy with neurostimulator | MDC 01 | Surgical | Surgical Oncology | 75 |
| 24 | Craniotomy with major device implant or acute complex CNS PDX without MCC | MDC 01 | Surgical | Neurosurgery | 75 |
| 25-27 | Craniotomy and endovascular intracranial procedures | MDC 01 | Surgical | Neurosurgery | 76 |
| 28-30 | Spinal procedures or spinal neurostimulators | MDC 01 | Surgical | Neurosurgery | 299 |
| 31-33 | Ventricular shunt procedures | MDC 01 | Surgical | Neurosurgery | 332 |
| 34-36 | Carotid artery stent procedure | MDC 01 | Surgical | Vascular Surgery | 50 |
| 37-39 | Extracranial procedures | none | Surgical | Vascular Surgery | 99 |
| 40-42 | Peripheral, cranial nerve and other nervous system procedure or peripheral neurostimulator | MDC 01 | Surgical | Neurosurgery | 248 |
| 52-53 | Spinal disorders and injuries | MDC 01 | Medical | Neurology | 295 |
| 54-55 | Nervous system neoplasms | MDC 01 | Medical | Medical Oncology | 186 |
| 56-57 | Degenerative nervous system disorders | MDC 01 | Medical | Neurology | 80 |
| 58-60 | Multiple sclerosis and cerebellar ataxia | MDC 01 | Medical | Neurology | 181 |
| 61-63 | Ischemic stroke, precerebral occlusion or transient ischemia with thrombolytic agent | MDC 01 | Medical | Neurology | 5 |
| 64-66 | Intracranial hemorrhage or cerebral infarction | MDC 01 | Medical | Neurology | 134 |
| 67-68 | Nonspecific CVA and precerebral occlusion without infarction | MDC 01 | Medical | Neurology | 194 |
| 69 | Transient Ischemia without thrombolytic agent | MDC 01 | Medical | Neurology | |
| 70-72 | Nonspecific cerebrovascular disorders | MDC 01 | Medical | Neurology | 193 |
| 73-74 | Cranial and peripheral nerve disorders | MDC 01 | Medical | Neurology | 72 |
| 75-76 | Viral meningitis | MDC 01 | Medical | Neurology | 334 |
| 77-79 | Hypertensive encephalopathy | MDC 01 | Medical | Neurology | 126 |
| 80-81 | Nontraumatic stupor and coma | MDC 01 | Medical | Neurology | 195 |
| 82-84 | Traumatic stupor and coma, coma >1 hr | MDC 01 | Medical | Neurology | 316 |
| 85-87 | Traumatic stupor and coma, coma <1 hr | MDC 01 | Medical | Neurology | 315 |
| 88-90 | Concussion | MDC 01 | Medical | Neurology | 67 |
| 91-93 | Other disorders of nervous system | MDC 01 | Medical | Neurology | 211 |
| 94-96 | Bacterial and tuberculous infections of nervous system | MDC 01 | Medical | Neurology | 30 |
| 97-99 | Non-bacterial infection of nervous system except viral meningitis | MDC 01 | Medical | Neurology | 189 |
| 100-101 | Seizures | MDC 01 | Medical | Neurology | 279 |
| 102-103 | Headaches | MDC 01 | Medical | Neurology | 116 |
| 113-114 | Orbital procedures | MDC 02 | Surgical | Ophthalmology-Surgical | 201 |
| 115 | Extraocular procedures except orbit | MDC 02 | Surgical | Ophthalmology-Surgical | |
| 116-117 | Intraocular procedures | MDC 02 | Surgical | Ophthalmology-Surgical | 136 |
| 121-122 | Acute major eye infections | MDC 02 | Medical | Ophthalmology-Medical | 7 |
| 123 | Neurological eye disorders | MDC 02 | Medical | Ophthalmology-Medical | |
| 124-125 | Other disorders of the eye | MDC 02 | Medical | Ophthalmology-Medical | 212 |
| 129-130 | Major head and neck procedures | MDC 03 | Surgical | Otorhinolaryngology-Surgical | 161 |
| 131-132 | Cranial and facial procedures | MDC 03 | Surgical | Otorhinolaryngology-Surgical | 73 |
| 133-134 | Other ear, nose, mouth, and throat O.R. procedures | MDC 03 | Surgical | Otorhinolaryngology-Surgical | 214 |
| 135-136 | Sinus and mastoid procedures | MDC 03 | Surgical | Otorhinolaryngology-Surgical | 288 |
| 137-138 | Mouth procedures | MDC 03 | Surgical | General Surgery | 180 |
| 139 | Salivary gland procedures | MDC 03 | Surgical | Otorhinolaryngology-Surgical | |
| 146-148 | Ear, nose, mouth, and throat malignancy | MDC 03 | Medical | Medical Oncology | 90 |
| 149 | Dysequilibrium | MDC 03 | Medical | Otorhinolaryngology-Medical | |
| 150-151 | Epistaxis | MDC 03 | Medical | Otorhinolaryngology-Medical | 94 |
| 152-153 | Otitis media and URI | MDC 03 | Medical | Otorhinolaryngology-Medical | 239 |
| 154-156 | Other ear, nose, mouth, and throat diagnoses | MDC 03 | Medical | Otorhinolaryngology-Medical | 213 |
| 157-159 | Dental and oral diseases | MDC 03 | Medical | Dental-Medical | 81 |
| 163-165 | Major chest procedures | MDC 04 | Surgical | Thoracic Surgery | 157 |
| 166-168 | Other respiratory system OR procedures | MDC 04 | Surgical | Thoracic Surgery | 235 |
| 175-176 | Pulmonary embolism | MDC 04 | Medical | Pulmonary-Medical | 265 |
| 177-179 | Respiratory infections and inflammations | MDC 04 | Medical | Pulmonary-Medical | 271 |
| 180-182 | Respiratory neoplasms | MDC 04 | Medical | Medical Oncology | 272 |
| 183-185 | Major chest trauma | MDC 04 | Medical | Pulmonary-Medical | 158 |
| 186-188 | Pleural effusion | MDC 04 | Medical | Pulmonary-Medical | 252 |
| 189 | Pulmonary Edema and Respiratory Failure | MDC 04 | Medical | Pulmonary-Medical | |
| 190-192 | Chronic obstructive pulmonary disease | MDC 04 | Medical | Pulmonary-Medical | 60 |
| 193-195 | Simple pneumonia and pleurisy | MDC 04 | Medical | Pulmonary-Medical | 286 |
| 196-198 | Interstitial lung disease | MDC 04 | Medical | Pulmonary-Medical | 133 |
| 199-201 | Pneumothorax | MDC 04 | Medical | Pulmonary-Medical | 253 |
| 202-203 | Bronchitis and asthma | MDC 04 | Medical | Pulmonary-Medical | 39 |
| 204 | Respiratory signs and symptoms | MDC 04 | Medical | Pulmonary-Medical | |
| 205-206 | Other respiratory system diagnoses | MDC 04 | Medical | Pulmonary-Medical | 236 |
| 207 | Respiratory system diagnosis with ventilator support >96 hours | MDC 04 | Medical | Pulmonary-Medical | |
| 208 | Respiratory system diagnosis with ventilator support <=96 hours | MDC 04 | Medical | Pulmonary-Medical | |
| 215 | Other heart assist system implant | MDC 05 | Surgical | Cardiac Surgery | |
| 216-218 | Cardiac valve and other major cardiothoracic procedure with cardiac catheterization | MDC 05 | Surgical | Cardiac Surgery | 48 |
| 219-221 | Cardiac valve and other major cardiothoracic procedure without cardiac catheterization | MDC 05 | Surgical | Cardiac Surgery | 49 |
| 222-223 | Cardiac defibrillator implant with cardiac catheterization with AMI/HF/shock | MDC 05 | Surgical | Cardiac Surgery | 43 |
| 224-225 | Cardiac defibrillator implant with cardiac catheterization without AMI/HF/shock | MDC 05 | Surgical | Cardiac Surgery | 44 |
| 226-227 | Cardiac defibrillator implant without cardiac catheterization | MDC 05 | Surgical | Cardiac Surgery | 45 |
| 228-229 | Other cardiothoracic procedures | MDC 05 | Surgical | Cardiac Surgery | 206 |
| 231-232 | Coronary bypass with PTCA | MDC 05 | Surgical | Cardiac Surgery | 70 |
| 233-234 | Coronary bypass with cardiac catheterization | MDC 05 | Surgical | Cardiac Surgery | 69 |
| 235-236 | Coronary bypass without cardiac catheterization | MDC 05 | Surgical | Cardiac Surgery | 71 |
| 237-238 | Major cardiovascular procedures | MDC 05 | Surgical | Vascular Surgery | |
| 239-241 | Amputation for circulatory system disorders except upper limb and toe | MDC 05 | Surgical | Vascular Surgery | 21 |
| 242-244 | Permanent cardiac pacemaker implant | MDC 05 | Surgical | Cardiac Surgery | 251 |
| 245 | AICD generator procedures | MDC 05 | Surgical | Cardiac Surgery | |
| 246-247 | Percutaneous cardiovascular procedure with drug-eluting stent | MDC 05 | Surgical | Vascular Surgery | 245 |
| 248-249 | Percutaneous cardiovascular procedure with non-drug-eluting stent | MDC 05 | Surgical | Vascular Surgery | 246 |
| 250-251 | Percutaneous cardiovascular procedure without coronary artery stent | MDC 05 | Surgical | Vascular Surgery | 247 |
| 252-254 | Other vascular procedures | MDC 05 | Surgical | Vascular Surgery | 238 |
| 255-257 | Upper limb and toe amputation for circulatory system disorders | MDC 05 | Surgical | Vascular Surgery | 318 |
| 258-259 | Cardiac pacemaker device replacement | MDC 05 | Surgical | Cardiac Surgery | 46 |
| 260-262 | Cardiac pacemaker revision except device replacement | MDC 05 | Surgical | Cardiac Surgery | 47 |
| 263 | Vein ligation and stripping | MDC 05 | Surgical | Vascular Surgery | |
| 264 | Other circulatory system OR procedures | MDC 05 | Surgical | Vascular Surgery | |
| 265 | AICD lead procedures | MDC 05 | Surgical | Cardiac Surgery | |
|
266-267 |
Endovascular cardiac valve replacement | MDC 05 | Surgical | Cardiac Surgery | |
|
268-269 |
Aortic and heart assist procedures except pulsation balloon | MDC 05 | Surgical | Cardiac Surgery | |
|
270-272 |
Other major cadiovascular procedures | MDC 05 | Surgical | Cardiac Surgery | |
| 273-274 | Percutaneous intracardiac procedures | MDC 05 | Surgical | Cardiac Surgery | |
| 280-282 | Acute myocardial infarction, discharged alive | MDC 05 | Medical | Cardiology-Medical | 8 |
| 283-285 | Acute myocardial infarction, expired | MDC 05 | Medical | Cardiology-Medical | 9 |
| 286-287 | Circulatory disorders except AMI, with cardiac catheterization | MDC 05 | Medical | Cardiology-Medical | 61 |
| 288-290 | Acute and subacute endocarditis | MDC 05 | Medical | Cardiology-Medical | 3 |
| 291-293 | Heart failure and shock | MDC 05 | Medical | Cardiology-Medical | 117 |
| 294-295 | Deep vein thrombophlebitis | MDC 05 | Medical | Cardiology-Medical | 79 |
| 296-298 | Cardiac arrest, unexplained | MDC 05 | Medical | Cardiology-Medical | 40 |
| 299-301 | Peripheral vascular disorders | MDC 05 | Medical | Cardiology-Medical | 249 |
| 302-303 | Artherosclerosis | MDC 05 | Medical | Cardiology-Medical | 28 |
| 304-305 | Hypertension | MDC 05 | Medical | Cardiology-Medical | 125 |
| 306-307 | Cardiac congenital and valvular disorders | MDC 05 | Medical | Cardiology-Medical | 42 |
| 308-310 | Cardiac arrhythmia and conduction disorders | MDC 05 | Medical | Cardiology-Medical | 41 |
| 311 | Angina pectoris | MDC 05 | Medical | Cardiology-Medical | |
| 312 | Syncope and collapse | MDC 05 | Medical | Cardiology-Medical | |
| 313 | Chest pain | MDC 05 | Medical | Cardiology-Medical | |
| 314-316 | Other circulatory system diagnoses | MDC 05 | Medical | Cardiology-Medical | 207 |
| 319-320 | Other endovascular cardiac valve procedures | MDC 05 | Surgical | Cardiac Surgery | |
| 326-328 | Stomach, esophageal, and duodenal procedure | MDC 06 | Surgical | General Surgery | 302 |
| 329-331 | Major small and large bowel procedures | MDC 06 | Surgical | General Surgery | 168 |
| 332-334 | Rectal resection | MDC 06 | Surgical | General Surgery | 267 |
| 335-337 | Peritoneal adhesiolysis | MDC 06 | Surgical | General Surgery | 250 |
| 338-340 | Appendectomy with complicated principal diagnosis | MDC 06 | Surgical | General Surgery | 25 |
| 341-343 | Appendectomy without complicated principal diagnosis | MDC 06 | Surgical | General Surgery | 26 |
| 344-346 | Minor small and large bowel procedures | MDC 06 | Surgical | General Surgery | 179 |
| 347-349 | Anal and stomal procedures | MDC 06 | Surgical | General Surgery | 23 |
| 350-352 | Inguinal and femoral hernia procedures | MDC 06 | Surgical | General Surgery | 132 |
| 353-355 | Hernia procedures except inguinal and femoral | MDC 06 | Surgical | General Surgery | 120 |
| 356-358 | Other digestive system O.R. procedures | MDC 06 | Surgical | General Surgery | 210 |
| 368-370 | Major esophageal disorders | MDC 06 | Medical | Gastroenterology-Medical | 159 |
| 371-373 | Major gastrointestinal disorders and peritoneal infections | MDC 06 | Medical | Gastroenterology-Medical | 160 |
| 374-376 | Digestive malignancy | MDC 06 | Medical | Medical Oncology | 84 |
| 377-379 | G.I. hemorrhage | MDC 06 | Medical | Gastroenterology-Medical | 112 |
| 380-382 | Complicated peptic ulcer | MDC 06 | Medical | Gastroenterology-Medical | 65 |
| 383-384 | Uncomplicated peptic ulcer | MDC 06 | Medical | Gastroenterology-Medical | 317 |
| 385-387 | Inflammatory bowel disease | MDC 06 | Medical | Gastroenterology-Medical | 131 |
| 388-390 | G.I. obstruction | MDC 06 | Medical | Gastroenterology-Medical | 113 |
| 391-392 | Esophagitis, gastroenteritis, and miscellaneous digestive disorders | MDC 06 | Medical | Gastroenterology-Medical | 95 |
| 393-395 | Other digestive system diagnoses | MDC 06 | Medical | Gastroenterology-Medical | 209 |
| 405-407 | Pancreas, liver, and shunt procedures | MDC 07 | Surgical | General Surgery | 241 |
| 408-410 | Biliary tract procedure except only cholecystectomy with or without C.D.E. | MDC 07 | Surgical | General Surgery | 34 |
| 411-413 | Cholecystectomy with C.D.E. | MDC 07 | Surgical | General Surgery | 59 |
| 414-416 | Cholecystectomy except by laparoscope without C.D.E. | MDC 07 | Surgical | General Surgery | 58 |
| 417-419 | Laparoscopic cholecystectomy without C.D.E. | MDC 07 | Surgical | General Surgery | 145 |
| 420-422 | Hepatobiliary diagnostic procedures | MDC 07 | Surgical | General Surgery | 119 |
| 423-425 | Other hepatobiliary or pancreas O.R. procedures | MDC 07 | Surgical | General Surgery | 219 |
| 432-434 | Cirrhosis and alcoholic hepatitis | MDC 07 | Medical | General - Medical | 62 |
| 435-437 | Malignancy of hepatobiliary system or pancreas | MDC 07 | Medical | Medical Oncology | 170 |
| 438-440 | Disorders of pancreas except malignancy | MDC 07 | Medical | General - Medical | 86 |
| 441-443 | Disorders of liver except malignancy, cirrhosis, or alcoholic hepatitis | MDC 07 | Medical | General - Medical | 85 |
| 444-446 | Disorders of the biliary tract | MDC 07 | Medical | General - Medical | 88 |
| 453-455 | Combined anterior/posterior spinal fusion | MDC 08 | Surgical | Orthopedic Surgery | 64 |
| 456-458 | Spinal fusion except cervical with spinal curvature or malignancy or infection or extensive fusions | MDC 08 | Surgical | Orthopedic Surgery | 296 |
| 459-460 | Spinal fusion except cervical | MDC 08 | Surgical | Orthopedic Surgery | 297 |
| 461-462 | Bilateral or multiple major joint procedures of lower extremity | MDC 08 | Surgical | Orthopedic Surgery | 33 |
| 463-465 | Wound debridement and skin graft except hand, for musculoskeletal system and connective tissue disorders | MDC 08 | Surgical | Orthopedic Surgery | 335 |
| 466-468 | Revision of hip or knee replacement | MDC 08 | Surgical | Orthopedic Surgery | 277 |
| 469-470 | Major hip and knee joint replacement or reattachment of lower extremity or total ankle replacement | MDC 08 | Surgical | Orthopedic Surgery | 164 |
| 471-473 | Cervical spinal fusion | MDC 08 | Surgical | Orthopedic Surgery | 52 |
| 474-476 | Amputation for musculoskeletal system and connective tissue disorders | MDC 08 | Surgical | Orthopedic Surgery | 22 |
| 477-479 | Biopsies of musculoskeletal system and connective tissue | MDC 08 | Surgical | Orthopedic Surgery | 35 |
| 480-482 | Hip and femur procedures except major joint | MDC 08 | Surgical | Orthopedic Surgery | 121 |
| 483 | Major joint/limb reattachment procedure of upper extremities | MDC 08 | Surgical | Orthopedic Surgery | |
| 485-487 |
Knee procedures with a principal diagnosis of infection |
MDC 08 | Surgical | Orthopedic Surgery | 143 |
| 488-489 | Knee procedures without a principal diagnosis of infection | MDC 08 | Surgical | Orthopedic Surgery | 144 |
| 492-494 | Lower extremity and humerus procedures except hip, foot, and femur | MDC 08 | Surgical | Orthopedic Surgery | 150 |
| 495-497 | Local excision and removal internal fixation devices except hip and femur | MDC 08 | Surgical | Orthopedic Surgery | 148 |
| 498-499 | Local excision and removal internal fixation devices of hip and femur | MDC 08 | Surgical | Orthopedic Surgery | 149 |
| 500-502 | Soft tissue procedures | MDC 08 | Surgical | Orthopedic Surgery | 294 |
| 503-505 | Foot procedures | MDC 08 | Surgical | Orthopedic Surgery | 105 |
| 506 | Major thumb or joint procedures | MDC 08 | Surgical | Orthopedic Surgery | |
| 507-508 | Major shoulder or elbow joint procedures | MDC 08 | Surgical | Orthopedic Surgery | 166 |
| 509 | Arthroscopy | MDC 08 | Surgical | Orthopedic Surgery | |
| 510-512 | Shoulder, elbow or forearm procedures, except major joint procedures | MDC 08 | Surgical | Orthopedic Surgery | 283 |
| 513-514 | Hand or wrist procedures, except major thumb or joint procedures | MDC 08 | Surgical | Orthopedic Surgery | 114 |
| 515-517 | Other musculoskeletal system and connective tissue O.R. procedures | MDC 08 | Surgical | Orthopedic Surgery | 229 |
| 518-520 | Back and neck procedures except spinal fusion | MDC 08 | Surgical | Orthopedic Surgery | |
| 533-534 | Fractures of femur | MDC 08 | Medical | Orthopedics-Medical | 106 |
| 535-536 | Fractures of hip and pelvis | MDC 08 | Medical | Orthopedics-Medical | 107 |
| 537-538 | Sprains, strains, and dislocations of hip, pelvis, and thigh | MDC 08 | Medical | Orthopedics-Medical | 301 |
| 539-541 | Osteomyelitis | MDC 08 | Medical | Orthopedics-Medical | 203 |
| 542-544 | Pathological fractures and musculoskeletal and connective tissue malignancy | MDC 08 | Medical | Medical Oncology | 242 |
| 545-547 | Connective tissue disorders | MDC 08 | Medical | Orthopedics-Medical | 68 |
| 548-550 | Septic arthritis | MDC 08 | Medical | Rheumatology | 280 |
| 551-552 | Medical back problems | MDC 08 | Medical | Orthopedics-Medical | 175 |
| 553-554 | Bone diseases and arthropathies | MDC 08 | Medical | Orthopedics-Medical | 36 |
| 555-556 | Signs and symptoms of musculoskeletal system and connective tissue | MDC 08 | Medical | Orthopedics-Medical | 285 |
| 557-558 | Tendonitis, myositis, and bursitis | MDC 08 | Medical | Orthopedics-Medical | 304 |
| 559-561 | Aftercare, musculoskeletal system, and connective tissue | MDC 08 | Medical | Orthopedics-Medical | 13 |
| 562-563 | Fracture, sprain, strain, and dislocation except femur, hip, pelvis, and thigh | MDC 08 | Medical | Orthopedics-Medical | 111 |
| 564-566 | Other musculoskeletal system and connective tissue diagnosis | MDC 08 | Medical | Orthopedics-Medical | 230 |
| 570-572 | Skin debridement | MDC 09 | Surgical | Plastic Surgery | |
| 573-575 | Skin graft for skin ulcer or cellulitis | MDC 09 | Surgical | Plastic Surgery | 290 |
| 576-578 | Skin graft except for skin ulcer or cellulitis | MDC 09 | Surgical | Plastic Surgery | 289 |
| 579-581 | Other skin, subcutaneous tissue and breast procedures | MDC 09 | Surgical | Plastic Surgery | 237 |
| 582-583 | Mastectomy for malignancy | MDC 09 | Surgical | Surgical Oncology | 174 |
| 584-585 | Breast biopsy, local excision and other breast procedures | MDC 09 | Surgical | Plastic Surgery | 38 |
| 592-594 | Skin ulcers | MDC 09 | Medical | Dermatology-Medical | 293 |
| 595-596 | Major skin disorders | MDC 09 | Medical | Dermatology-Medical | 167 |
| 597-599 | Malignant breast disorders | MDC 09 | Medical | Medical Oncology | 173 |
| 600-601 | Non-malignant breast disorders | MDC 09 | Medical | Dermatology-Medical | 192 |
| 602-603 | Cellulitis | MDC 09 | Medical | Dermatology-Medical | 51 |
| 604-605 | Trauma to the skin, subcutaneous tissue, and breast | MDC 09 | Medical | Dermatology-Medical | 313 |
| 606-607 | Minor skin disorders | MDC 09 | Medical | Dermatology-Medical | 178 |
| 614-615 | Adrenal and pituitary procedures | MDC 10 | Surgical | General Surgery | 11 |
| 616-618 | Amputation of lower limb for endocrine, nutritional, and metabolic disorders | MDC 10 | Surgical | General Surgery | 20 |
| 619-621 | O.R. procedures for obesity | MDC 10 | Surgical | General Surgery | 200 |
| 622-624 | Skin grafts and wound debridement for endocrine, nutritional and metabolic disorders | MDC 10 | Surgical | General Surgery | 291 |
| 625-627 | Thyroid, parathyroid, and thyroglossal procedures | MDC 10 | Surgical | General Surgery | 307 |
| 628-630 | Other endocrine, nutritional, and metabolic O.R. procedures | MDC 10 | Surgical | General Surgery | 215 |
| 637-639 | Diabetes | MDC 10 | Medical | Endocrinology-Medical | 83 |
| 640-641 | Miscellaneous disorders of nutrition, metabolism, fluids and electrolytes | MDC 10 | Medical | Endocrinology-Medical | 197 |
| 642 | Inborn and other disorders of metabolism | MDC 10 | Medical | Endocrinology-Medical | |
| 643-645 | Endocrine disorders | MDC 10 | Medical | Endocrinology-Medical | 93 |
| 652 | Kidney transplant | MDC 11 | Surgical | Urology-Surgical | |
| 653-655 | Major bladder procedures | MDC 11 | Surgical | Urology-Surgical | 155 |
| 656-658 | Kidney and ureter procedures for neoplasm | MDC 11 | Surgical | Urology-Surgical | 137 |
| 659-661 | Kidney and ureter procedures for non-neoplasm | MDC 11 | Surgical | Urology-Surgical | 138 |
| 662-664 | Minor bladder procedures | MDC 11 | Surgical | Urology-Surgical | 177 |
| 665-667 | Prostatectomy | MDC 11 | Surgical | Urology-Surgical | 261 |
| 668-670 | Transurethral procedures | MDC 11 | Surgical | Urology-Surgical | 311 |
| 671-672 | Urethral procedures | MDC 11 | Surgical | Urology-Surgical | 319 |
| 673-675 | Other kidney and urinary tract procedures | MDC 11 | Surgical | Urology-Surgical | 223 |
| 682-684 | Renal failure | MDC 11 | Medical | Nephrology | 270 |
| 685 | Admit for renal dialysis | MDC 11 | Medical | Nephrology | |
| 686-688 | Kidney and urinary tract neoplasms | MDC 11 | Medical | Medical Oncology | 140 |
| 689-690 | Kidney and urinary tract infections | MDC 11 | Medical | Urology-Medical | 139 |
| 691-692 | Urinary stones with ESW lithotripsy | MDC 11 | Medical | Urology-Medical | 321 |
| 693-694 | Urinary stones without ESW lithotripsy | MDC 11 | Medical | Urology-Medical | 322 |
| 695-696 | Kidney and urinary tract signs and symptoms | MDC 11 | Medical | Urology-Medical | 141 |
| 697 | Urethral stricture | MDC 11 | Medical | Urology-Medical | |
| 698-700 | Other kidney and urinary tract diagnoses | MDC 11 | Medical | Urology-Medical | 222 |
| 707-708 | Major male pelvic procedures | MDC 12 | Surgical | Urology-Surgical | 165 |
| 709-710 | Penis procedures | MDC 12 | Surgical | Urology-Surgical | 244 |
| 711-712 | Testes procedures | MDC 12 | Surgical | Urology-Surgical | 305 |
| 713-714 | Transurethral prostatectomy | MDC 12 | Surgical | Urology-Surgical | 312 |
| 715-716 | Other male reproductive system O.R. procedures for malignancy | MDC 12 | Surgical | Surgical Oncology | 226 |
| 717-718 | Other male reproductive system O.R. procedures except malignancy | MDC 12 | Surgical | Urology-Surgical | 225 |
| 722-724 | Malignancy, male reproductive system | MDC 12 | Medical | Medical Oncology | 172 |
| 725-726 | Benign prostatic hypertrophy | MDC 12 | Medical | Urology-Medical | 32 |
| 727-728 | Inflammation of the male reproductive system | MDC 12 | Medical | Urology-Medical | 130 |
| 729-730 | Other male reproductive system diagnoses | MDC 12 | Medical | Urology-Medical | 224 |
| 734-735 | Pelvic evisceration, radical hysterectomy and radical vulvectomy | MDC 13 | Surgical | Gynecology-Surgical | 243 |
| 736-738 | Uterine and adnexa procedures for ovarian or adnexal malignancy | MDC 13 | Surgical | Surgical Oncology | 324 |
| 739-741 | Uterine, adnexa procedures for non-ovarian and non-adnexal malignancy | MDC 13 | Surgical | Surgical Oncology | 325 |
| 742-743 | Uterine and adnexa procedures for non-malignancy | MDC 13 | Surgical | Gynecology-Surgical | 323 |
| 744-745 | Conization, laparoscopy, and tubal interruption | MDC 13 | Surgical | Gynecology-Surgical | 78 |
| 746-747 | Vagina, cervix, and vulva procedures | MDC 13 | Surgical | Gynecology-Surgical | 326 |
| 748 | Female reproductive system reconstructive procedures | MDC 13 | Surgical | Gynecology-Surgical | |
| 749-750 | Other female reproductive system O.R. procedures | MDC 13 | Surgical | Gynecology-Surgical | 217 |
| 754-756 | Malignancy, female reproductive system | MDC 13 | Medical | Medical Oncology | 171 |
| 757-759 | Infections, female reproductive system | MDC 13 | Medical | Gynecology-Medical | 128 |
| 760-761 | Menstrual and other female reproductive system disorders | MDC 13 | Medical | Gynecology-Medical | 176 |
| 765-766 | Cesarean section | MDC 14 | Surgical | Obstetrics-Surgical | 53 |
| 767 | Vaginal delivery with sterilization and/or D&C | MDC 14 | Surgical | Obstetrics-Surgical | |
| 768 | Vaginal delivery with O.R. procedure except sterilization and/or D&C | MDC 14 | Surgical | Obstetrics-Surgical | |
| 769 | Postpartum and post abortion diagnoses with O.R. procedure | MDC 14 | Surgical | Obstetrics-Surgical | |
| 770 | Abortion with D&C, aspiration curettage or hysterectomy | MDC 14 | Surgical | Obstetrics-Surgical | |
| 774 | Vaginal delivery with complicating diagnoses | MDC 14 | Medical | Obstetrics-Medical | |
| 775 | Vaginal delivery without complicating diagnoses | MDC 14 | Medical | Obstetrics-Medical | |
| 776 | Postpartum and post abortion diagnoses without O.R. procedure | MDC 14 | Medical | Obstetrics-Medical | |
| 777 | Ectopic pregnancy | MDC 14 | Medical | Obstetrics-Medical | |
| 778 | Threatened abortion | MDC 14 | Medical | Obstetrics-Medical | |
| 779 | Abortion without D&C | MDC 14 | Medical | Obstetrics-Medical | |
| 780 | False labor | MDC 14 | Medical | Obstetrics-Medical | |
| 781 | Other antepartum diagnoses with medical complications | MDC 14 | Medical | Obstetrics-Medical | |
| 782 | Other antepartum diagnoses without medical complications | MDC 14 | Medical | Obstetrics-Medical | |
| 783-785 | Cesarean section with sterilization | MDC 14 | Surgical | Obstetrics-Surgical | |
| 786-788 | Cesarean section without sterilization | MDC 14 | Surgical | Obstetrics-Surgical | |
| 789 | Neonates, died or transferred to another acute care facility | MDC 15 | Medical | Neonatology | |
| 790 | Extreme immaturity or respiratory distress syndrome, neonate | MDC 15 | Medical | Neonatology | |
| 791 | Prematurity with major problems | MDC 15 | Medical | Neonatology | |
| 792 | Prematurity without major problems | MDC 15 | Medical | Neonatology | |
| 793 | Full term neonate with major problems | MDC 15 | Medical | Neonatology | |
| 794 | Neonate with other significant problems | MDC 15 | Medical | Neonatology | |
| 795 | Normal Newborn | MDC 15 | Medical | Normal Newborns | |
| 796-798 | Vaginal delivery with sterilization or D&C | MDC 14 | Surgical | Obstetrics-Surgical | |
| 799-801 | Splenectomy | MDC 16 | Surgical |
Hematology-Surgical |
300 |
| 802-804 | Other O.R. procedures of the blood and blood-forming organs | MDC 16 | Surgical |
Hematology-Surgical |
232 |
| 805-807 | Vaginal delivery without sterilization or D&C | MDC 14 | Surgical | Obstetrics-Surgical | |
| 808-810 | Major hematological and immunological diagnoses except sickle cell crisis and coagulation disorders | MDC 16 | Medical | Hematology-Medical | 162 |
| 811-812 | Red blood cell disorders | MDC 16 | Medical | Hematology-Medical | 268 |
| 813 | Coagulation disorders | MDC 16 | Medical | Hematology-Medical | |
| 814-816 | Reticuloendothelial and immunity disorders | MDC 16 | Medical | Hematology-Medical | 276 |
| 817-819 | Other antepartum diagnoses with O.R. procedure | MDC 14 | Surgical | Obstetrics-Surgical | |
| 820-822 | Lymphoma and leukemia with major O.R. procedure | MDC 17 | Surgical | Surgical Oncology | 152 |
| 823-825 | Lymphoma and non-acute leukemia with other O.R. procedure | MDC 17 | Surgical | Surgical Oncology | 154 |
| 826-828 | Myeloproliferative disorders or poorly differentiated neoplasms with major O.R. procedure | MDC 17 | Surgical | Surgical Oncology | 182 |
| 829-830 | Myeloproliferative disorders or poorly differentiated neoplasms with other procedure | MDC 17 | Surgical | Surgical Oncology | 183 |
| 831-833 | Other antepartum diagnoses without O.R. procedure | MDC 14 | Medical | Obstetrics-Surgical | |
| 834-836 | Acute leukemia without major O.R. procedure | MDC 17 | Medical | Medical Oncology | 6 |
| 837-839 | Chemotherapy with acute leukemia as secondary diagnosis | MDC 17 | Medical | Medical Oncology | 55 |
| 840-842 | Lymphoma and non-acute leukemia | MDC 17 | Medical | Medical Oncology | 153 |
| 843-845 | Other myeloproliferative disorder or poorly differentiated neoplastic diagnoses | MDC 17 | Medical | Medical Oncology | 231 |
| 846-848 | Chemotherapy without acute leukemia as secondary diagnosis | MDC 17 | Medical | Medical Oncology | 56 |
| 849 | Radiotherapy | MDC 17 | Medical | Medical Oncology | |
| 853-855 | Infectious and parasitic diseases with O.R. procedure | MDC 18 | Surgical | General Surgery | 129 |
| 856-858 | Postoperative or post-traumatic infections with O.R. procedure | MDC 18 | Surgical | General Surgery | 256 |
| 862-863 | Postoperative and post-traumatic infections | MDC 18 | Medical | Infectious Diseases | 255 |
| 864 | Fever | MDC 18 | Medical | Infectious Diseases | |
| 865-866 | Viral illness | MDC 18 | Medical | Infectious Diseases | 333 |
| 867-869 | Other infectious and parasitic diseases diagnoses | MDC 18 | Medical | Infectious Diseases | 220 |
| 870 | Septicemia or severe sepsis with mechanical ventilation >96 hours | MDC 18 | Medical | Infectious Diseases | |
| 871-872 | Septicemia or severe sepsis without mechanical ventilation >96 hours | MDC 18 | Medical | Infectious Diseases | 282 |
| 876 | O.R. procedure with principal diagnoses of mental illness | MDC 19 | Medical | Psychiatry | |
| 880 | Acute adjustment reaction and psychosocial dysfunction | MDC 19 | Medical | Psychiatry | |
| 881 | Depressive neuroses | MDC 19 | Medical | Psychiatry | |
| 882 | Neuroses except depressive | MDC 19 | Medical | Psychiatry | |
| 883 | Disorders of personality and impulse control | MDC 19 | Medical | Psychiatry | |
| 884 | Organic disturbances and intellectual disability | MDC 19 | Medical | Psychiatry | |
| 885 | Psychoses | MDC 19 | Medical | Psychiatry | |
| 886 | Behavioral and developmental disorders | MDC 19 | Medical | Psychiatry | |
| 887 | Other mental disorder diagnoses | MDC 19 | Medical | Psychiatry | |
| 894 | Alcohol, drug abuse or dependence, left AMA | MDC 19 | Medical | Chemical Dependency | |
| 895 | Alcohol, drug abuse or dependence with rehabilitation therapy | MDC 19 | Medical | Chemical Dependency | |
| 896-897 | Alcohol, drug abuse or dependence without rehabilitation therapy | MDC 20 | Medical | Chemical Dependency | 17 |
| 901-903 | Wound debridement for injuries | MDC 21 | Surgical | Plastic Surgery | 336 |
| 904-905 | Skin grafts for injuries | MDC 21 | Surgical | Plastic Surgery | 292 |
| 906 | Hand procedures for injuries | MDC 21 | Medical | Plastic Surgery | |
| 907-909 | Other O.R. procedures for injuries | MDC 21 | Surgical | General Surgery | 233 |
| 913-914 | Traumatic injury | MDC 21 | Medical | General - Medical | 314 |
| 915-916 | Allergic reactions | MDC 21 | Medical | General - Medical | 19 |
| 917-918 | Poisoning and toxic effects of drugs | MDC 21 | Medical | General - Medical | 254 |
| 919-921 | Complications of treatment | MDC 21 | Medical | General - Medical | 66 |
| 922-923 | Other injury, poisoning, and toxic effect diagnosis | MDC 21 | Medical | General - Medical | 221 |
| 927 | Extensive burns or full thickness burns with mechanical ventilation >96 hours with skin graft | MDC 22 | Surgical | Burns-Surgical | |
| 928-929 | Full thickness burn with skin graft or inhalation injury | MDC 22 | Surgical | Burns-Surgical | 109 |
| 933 | Extensive burns or full thickness burns with mechanical ventilation >96 hours without skin graft | MDC 22 | Medical | Burns-Medical | |
| 934 | Full thickness burn without skin graft or inhalation injury | MDC 22 | Medical | Burns-Medical | |
| 935 | Non-extensive burns | MDC 22 | Medical | Burns-Medical | |
| 939-941 | O.R. procedure with diagnoses of other contact with health services | MDC 23 | Surgical | General Surgery | 198 |
| 945-946 | Rehabilitation | MDC 23 | Medical | Rehabilitation | 269 |
| 947-948 | Signs and symptoms | MDC 23 | Medical | Rehabilitation | 337 |
| 949-950 | Aftercare | MDC 23 | Medical | Rehabilitation | 12 |
| 951 | Other factors influencing health status | MDC 23 | Medical | Rehabilitation | |
| 955 | Craniotomy for multiple significant trauma | MDC 24 | Surgical | Neurosurgery | |
| 956 | Limb reattachment, hip and femur procedures for multiple significant trauma | MDC 24 | Surgical | Orthopedic Surgery | |
| 957-959 | Other O.R. procedures for multiple significant trauma | MDC 24 | Surgical | General Surgery | 234 |
| 963-965 | Other multiple significant trauma | MDC 24 | Medical | General - Medical | 228 |
| 969-970 | HIV with extensive O.R. procedure | MDC 25 | Surgical | General Surgery | 122 |
| 974-976 | HIV with major related condition | MDC 25 | Medical | Infectious Diseases | 123 |
| 977 | HIV with or without other related condition | MDC 25 | Medical | Infectious Diseases | |
| 981-983 | Extensive O.R. procedure unrelated to principal diagnosis | none | Surgical | General Surgery | 98 |
| 984-986 | Prostatic O.R. procedure unrelated to principal diagnosis | Surgical | Urology-Surgical | ||
| 987-989 | Non-extensive O.R. procedure unrelated to principal diagnosis | none | Surgical | General Surgery | 191 |
| 998 | Principal diagnosis invalid as discharge diagnosis | none | Ungroupable | ||
| 999 | Ungroupable | none | Ungroupable |
MDC descriptions
The previous tables reference Major Diagnostic Categories (MDC) codes. Their descriptions follow.
| MDC code | Description |
|---|---|
| 01 | Diseases and disorders of the nervous system |
| 02 | Diseases and disorders of the eye |
| 03 | Diseases and disorders of the ear, nose, mouth and throat |
| 04 | Diseases and disorders of the respiratory system |
| 05 | Diseases and disorders of the circulatory system |
| 06 | Diseases and disorders of the digestive system |
| 07 | Diseases and disorders of the hepatobiliary system and pancreas |
| 08 | Diseases and disorders of the musculoskeletal system and connective tissue |
| 09 | Diseases and disorders of the skin, subcutaneous tissue and breast |
| 10 | Endocrine, nutritional and metabolic diseases and disorders |
| 11 | Diseases and disorders of the kidney and urinary tract |
| 12 | Diseases and disorders of the male reproductive system |
| 13 | Diseases and disorders of the female reproductive system |
| 14 | Pregnancy, childbirth and the puerperium |
| 15 | Newborns and other neonates with conditions originating in perinatal period |
| 16 | Diseases and disorders of blood, blood forming organs, and immunologic disorders |
| 17 | Myeloproliferative diseases and disorders, poorly differentiated neoplasms |
| 18 | Infectious and parasitic diseases, systemic or unspecified sites |
| 19 | Mental diseases and disorders |
| 20 | Alcohol or drug use or induced organic mental disorders |
| 21 | Injuries, poisonings and toxic effects of drugs |
| 22 | Burns |
| 23 | Factors influencing health status and other contacts with health services |
| 24 | Multiple significant trauma |
| 25 | Human immunodeficiency virus infections |
